Got this as well, and ended up at this LP bug...BUT...there was something peculiar.
$ head -1 /boot/grubenv
did NOT cleanly display "GRUB Environment Block" but had a few characters garbled in that line.
I remember this from IDE times, with badly-seated cables that don't display MAXTOR but MBYUIPR or whatever on HDD detection. That's because one single bit is off due to one bent pin.
It hasn't happened too rarely that I only saw a skew cable connection when using a magnifiier, or, at least a good lighting source (which is not always given)
So thanks everybody for the "fix", but I can't blame grub2 for it yet. See above output ($ head....)
hah.
Maybe this is not a "bug" after all...
Got this as well, and ended up at this LP bug...BUT...there was something peculiar.
$ head -1 /boot/grubenv
did NOT cleanly display "GRUB Environment Block" but had a few characters garbled in that line.
I remember this from IDE times, with badly-seated cables that don't display MAXTOR but MBYUIPR or whatever on HDD detection. That's because one single bit is off due to one bent pin.
It hasn't happened too rarely that I only saw a skew cable connection when using a magnifiier, or, at least a good lighting source (which is not always given)
So thanks everybody for the "fix", but I can't blame grub2 for it yet. See above output ($ head....)